Force definition of implicit members to get the destructor.

Author: vgvassilev

include/clang/Interpreter/CppInterOp.h

@@ -208,7 +208,7 @@ namespace Cpp {
   TCppFunction_t GetDefaultConstructor(TCppSema_t sema, TCppScope_t scope);
 
   ///\returns the class destructor.
-  TCppFunction_t GetDestructor(TCppScope_t scope);
+  TCppFunction_t GetDestructor(TCppSema_t sema, TCppScope_t scope);
 
   std::vector<TCppFunction_t> GetFunctionsUsingName(TCppSema_t sema,
                                                     TCppScope_t scope,

lib/Interpreter/CppInterOp.cpp

@@ -676,10 +676,12 @@ namespace Cpp {
     return S->LookupDefaultConstructor(CXXRD);
   }
 
-  TCppFunction_t GetDestructor(TCppScope_t scope) {
+  TCppFunction_t GetDestructor(TCppSema_t sema, TCppScope_t scope) {
     auto *D = (clang::Decl *) scope;
 
     if (auto *CXXRD = llvm::dyn_cast_or_null<CXXRecordDecl>(D)) {
+      clang::Sema *S = (clang::Sema *)sema;
+      S->ForceDeclarationOfImplicitMembers(CXXRD);
       return CXXRD->getDestructor();
     }
 

unittests/CppInterOp/FunctionReflectionTest.cpp

@@ -165,8 +165,13 @@ TEST(FunctionReflectionTest, GetDestructor) {
     )";
 
   GetAllTopLevelDecls(code, Decls);
-  EXPECT_FALSE(Cpp::GetDestructor(Decls[0]));
-  EXPECT_TRUE(Cpp::GetDestructor(Decls[1]));
+  Sema *S = &Interp->getCI()->getSema();
+
+  EXPECT_TRUE(Cpp::GetDestructor(S, Decls[0]));
+  EXPECT_TRUE(Cpp::GetDestructor(S, Decls[1]));
+  auto DeletedDtor = Cpp::GetDestructor(S, Decls[2]);
+  EXPECT_TRUE(DeletedDtor);
+  EXPECT_TRUE(Cpp::IsFunctionDeleted(DeletedDtor));
 }
 
 TEST(FunctionReflectionTest, GetFunctionsUsingName) {
@@ -661,7 +666,7 @@ TEST(FunctionReflectionTest, GetFunctionCallWrapper) {
   EXPECT_EQ(output, "Default Ctor Called\n");
   EXPECT_TRUE(object != nullptr);
 
-  auto *DtorD = (clang::CXXConstructorDecl *)Cpp::GetDestructor(ClassC);
+  auto *DtorD = (clang::CXXDestructorDecl *)Cpp::GetDestructor(S, ClassC);
   auto FCI_Dtor =
       Cpp::MakeFunctionCallable((Cpp::TInterp_t)Interp.get(), DtorD);
   testing::internal::CaptureStdout();